US8414767B2 - Module for purifying a fluid, in particular water - Google Patents

Module for purifying a fluid, in particular water Download PDF

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Publication number
US8414767B2
US8414767B2 US10/666,017 US66601703A US8414767B2 US 8414767 B2 US8414767 B2 US 8414767B2 US 66601703 A US66601703 A US 66601703A US 8414767 B2 US8414767 B2 US 8414767B2
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cylindrical
container
module according
cartridge
fluid
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US20040104161A1 (en
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Yves Gaignet
Denis Daulasim
Jacques Moulin
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EMD Millipore Corp
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EMD Millipore Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • B01D35/301—Constructions of two or more housings
    • B01D35/303—Constructions of two or more housings the housings being modular, e.g. standardised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/08—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/10—Accessories; Auxiliary operations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/006—Cartridges
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/02—Softening water by precipitation of the hardness
    • C02F5/04—Softening water by precipitation of the hardness using phosphates

Definitions

  • the present invention relates generally to modules for purifying a fluid and in particular to modules for purifying water.
  • the invention relates more particularly to the situation in which the module for purifying a fluid includes a cylindrical container having at a first of its axial ends fluid inlet and outlet orifices communicating with the interior of the module, in which are housed means for pretreating the fluid to be purified and means for treating the fluid treated by the pretreatment means.
  • the pretreatment means just like reverse osmosis treatment means, take the form of made to measure elements.
  • the elements are replaceable to make the modules less expensive, at the cost of being somewhat difficult to use.
  • a general object of the present invention is an arrangement that avoids this drawback and has further advantages.
  • the present invention provides a module for purifying a fluid, in particular for purifying water, of the kind including a cylindrical container provided at a first of its axial ends with fluid inlet and outlet orifices communicating with the interior of the module, in which are housed pretreatment means for carrying out a first operation of purifying the fluid and treatment means for carrying out a second operation of purifying the fluid after the latter has been treated by the pretreatment means, which module is characterized in that the container is monolithic to form a disposable module and the interior thereof is divided by separator means into an external cylindrical space and an internal cylindrical space communicating with each other via one or more passages in the vicinity of the second axial end of the container, the pretreatment means are pretreatment means known in the art, the treatment means include a cartridge known in the art of the kind including one or more selectively permeable membranes for dividing, by virtue of permeation through the membrane or membranes due to the action of a pressure gradient, the flow of fluid that has undergone the first purification operation and caused to flow tangential
  • the invention exploits the availability of standard design off-the-shelf pretreatment and treatment means, in particular reverse osmosis, nanofiltration and ultrafiltration cartridges, which are therefore economical, to produce a disposable module which is for this very reason easier to use than prior art embodiments of this type.
  • the reverse osmosis cartridge used is preferably of the kind including (i) a cylindrical enclosure and, concentric therewith, a hollow, perforated, central tube, the central tube sharing the axis of the cylindrical container with the external cylindrical space and the internal cylindrical space, (ii) one or more selectively permeable reverse osmosis treatment membranes between the cylindrical enclosure and the central tube and communicating with the central tube for collection by the latter of the flow of permeate and with the exterior of the reverse osmosis cartridge via the annular faces thereof between the cylindrical enclosure and the central tube at each axial end of the cylindrical enclosure, respectively to feed the reverse osmosis cartridge with water treated by the pretreatment means and for the outflow of retentate.
  • means for providing a sealed connection between the separator means and the cylindrical enclosure of the reverse osmosis cartridge are attached to the cylindrical enclosure and extend around the cylindrical enclosure.
  • the pretreatment means are generally chosen from the group comprising activated charcoal, polyphosphates and frontal filtration elements (the fluid to be treated is fed perpendicularly to the filter medium), such as porous disks, etc.
  • FIG. 1 is a perspective view of a purified water production unit equipped with two water treatment modules, one of which conforms to the invention
  • FIG. 2 is an exploded perspective view to a different scale of the assembly of two modules from FIG. 1 ;
  • FIG. 3 is a view of the module conforming to the invention to a larger scale and in longitudinal section taken along the line III-III in FIG. 2 ;
  • FIG. 4 is a perspective view to a larger scale of the head of the module according to the invention, prior to assembly of the module;
  • FIG. 5 is a view of the bottom of the module to a larger scale and showing the container of the module in cross section;
  • FIGS. 6 to 9 are views similar to FIGS. 2 to 5 , respectively, and represent an assembly of two water treatment modules conforming to a preferred embodiment of the invention.
  • the purified water production unit 10 shown in FIG. 1 includes an enclosure 11 with two projecting support arms 12 for removably mounting an assembly 13 of two purified water production modules 14 and 15 on the unit 10 .
  • the modules 14 and 15 are shown more diagrammatically in FIG. 1 than in FIGS. 2 to 5 .
  • the unit 10 includes male connectors (not visible in the figures) for feeding water to the modules 14 and 15 and recovering water treated by the modules 14 and 15 .
  • untreated water is fed by the unit 10 to the first module 14 , which treats it, and the unit 10 recovers water treated in this way in order to feed it to the second module 15 , which also treats it, but using different means from those used in the first module 14 (this is known as polishing).
  • purified water recovered by the unit 10 at the outlet of the second module 15 is in practice ultrapure.
  • the means for removably mounting the assembly 13 of modules on the unit 10 are not in themselves relevant to the present invention either and are not described in detail here.
  • each support arm 12 has a recess (not visible in the figures) in its internal face facing toward the internal face of the opposite support arm 12 , by means of which are formed a heel-piece and a bearing surface for a lateral extension 16 of the module 14 , 15 associated with the support arm 12 .
  • each lateral extension 16 has an opening 17 in which the heel-piece is intended to be nested and which is bordered by a bevel 18 having a configuration complementary to that of the dihedral angle with which it is intended to cooperate.
  • the user can therefore very easily tilt the assembly 13 , after inserting the extensions 16 between the arms 12 , to engage each bevel 18 in the associated dihedral angle to prevent movement of the assembly 13 in translation on the unit 10 . Thanks to the arrangements previously cited, separation is also achieved by tilting the assembly 13 .
  • the modules 14 and 15 are coupled by a base 21 with a figure-of-eight configuration comprising two rings 22 having an internal conformation for removably clipping them to the bottom 23 of one of the modules 14 and 15 , each of which is provided for this purpose with a flange 24 .
  • the two rings 22 are joined by a bridge 25 molded in one piece with the rings 22 from a plastics material.
  • the modules 14 and 15 are also coupled together at the level of their head 20 by two connecting strips 26 and 27 .
  • the strip 26 carries studs 28 by which the modules 14 and 15 can be coupled side by side by means of holes 29 through their lateral extensions 16 adapted to receive the studs 28 .
  • each purified water production module 14 , 15 includes a container 30 with a cylindrical wall 31 closed at a first axial end by the head 20 for connecting the module 14 , 15 to the water purification unit 10 and at its second axial end by the bottom 23 .
  • the head 20 is permanently fixed to the cylindrical wall 31 , here by a welding operation involving fusing their annular edges, and the bottom 23 is molded in one piece with the cylindrical wall 31 from a plastics material. This produces a monolithic container intended to form a disposable module 14 , 15 .
  • Each head 20 further includes three parallel connectors 32 1 - 32 3 in each of which there is formed a water inlet or outlet orifice 33 1 - 33 3 communicating with the interior of the module 14 , 15 and extending globally perpendicularly to the axis 34 of the cylindrical wall 31 of the container 30 (see FIGS. 2 and 3 ).
  • the male connectors of the unit 10 are designed to be nested inside the female connectors 32 1 - 32 3 , and rubber seals (not visible in the figures) seal the male/female connector assemblies.
  • the modules 14 and 15 as described thus far are identical.
  • the module 15 shares with the module 14 the same external structure, for reasons of economical manufacture and because the ultrapure water production unit 10 is designed to use an assembly 13 of two modules.
  • the modules differ in terms of their internal structure.
  • the interior of the purified water production module 14 is divided into an internal cylindrical space 35 and an external cylindrical space 36 , concentrically surrounding the internal space 35 , which communicate with each other via radial passages 37 in the vicinity of the axial end of the container 30 opposite that with the water inlet and outlet orifices 33 1 - 33 3 .
  • This division is to enable separate pretreatment and treatment of water entering the module 14 in the external cylindrical space and in the internal cylindrical space, respectively, and is provided by an internal plastics material cylindrical wall 38 extending a cylindrical skirt 39 projecting from the internal face of the head 20 as far as a crenellated ring 40 which projects from the internal face of the bottom 23 and whose crenellations form the passages 37 .
  • the internal cylindrical wall 38 is fixed to the cylindrical skirt 39 of the head 20 by a welding operation to fuse their annular edges, and that the head 20 as such is fixed by fusion welding to the external cylindrical wall 31 , as already stated hereinabove, through the intermediary of a ring 42 welded to the upper annular edge 44 of the external cylindrical wall 31 .
  • the perimeter of the internal cylindrical wall 38 also has, in the vicinity of each of its axial ends, centering fingers 45 extending radially as far as the cylindrical wall 31 of the container 30 when the module 14 is assembled. There are six of these centering fingers 45 at each axial end and they are regularly spaced around the perimeter of the cylindrical wall 38 .
  • centering fingers 45 contribute in particular to optimal positioning while welding the cylindrical skirt 39 of the head 20 to the internal cylindrical wall 38 of the container 30 .
  • the crenellated ring 40 projecting from the bottom 23 includes recesses 46 between the crenellations of the ring 40 and forming the passages 37 .
  • each recess 46 is formed of two orthogonal facets 47 and 48 for positioning the internal cylindrical wall 38 in the vicinity of the bottom 23 , one facet (the facet 47 ) providing an axial abutment for the internal cylindrical wall 38 and the other facet (the facet 48 ) being operative inside the latter (see FIG. 3 ).
  • means for pretreating water entering the module 14 which are known in the art, are housed in the external space 36 of the module 14 and means for treating water that has been pretreated in the external cylindrical space 36 , which are also known in the art, are housed in the internal space 35 .
  • the pretreatment means preferably comprise activated charcoal, here in the form of grains 49 .
  • a porous disk 50 based on a filter grid made of metal, plastics material or woven or non-woven (cellulose, polypropylene, polyethylene, polyamide, polyester, etc.) fibers is disposed in the vicinity of each axial end of the container 30 between the cylindrical walls 31 and 38 thereof to retain the activated charcoal grains in the external cylindrical space 36 whilst allowing the water to be purified to pass.
  • the disks 50 are tightly fitted to the exterior of the interior cylindrical wall 38 and to the interior of the exterior cylindrical wall 31 .
  • the treatment means generally include a cartridge 51 which is known in the art and is of the kind having at least one selectively permeable membrane for dividing the flow of water which is treated by the pretreatment means, and is caused to flow tangentially to the membrane or membranes, by virtue of permeation through the membrane or membranes due to the action of a pressure gradient, into a flow of permeate or diluate consisting of purified water that has passed through the membrane or membranes and has therefore undergone two purification treatments in the module 14 , and a flow of retentate or concentrate consisting of waste water that has not passed through the membrane or membranes.
  • a cartridge 51 which is known in the art and is of the kind having at least one selectively permeable membrane for dividing the flow of water which is treated by the pretreatment means, and is caused to flow tangentially to the membrane or membranes, by virtue of permeation through the membrane or membranes due to the action of a pressure gradient, into a flow of permeate or diluate consisting of purified water that has passed through
  • the treatment means preferably include a reverse osmosis cartridge 51 .
  • this kind of reverse osmosis cartridge generally has a membrane structure with one or more films forming a membrane wound in a spiral around a central tube and spacers such as plastics material grids for the feed solution (water to be purified) and the flow of permeate.
  • the spacers generally provide a support for the film or films and define flow passages allowing water that has entered the cartridge to flow tangentially along the film or films and water that has passed through the films to be collected and fed to the central tube.
  • the reverse osmosis cartridge 51 is of the kind including a cylindrical enclosure 52 and a hollow perforated central tube 53 concentric therewith.
  • the central tube 53 is disposed to share the axis 34 of the cylindrical container 30 with the external cylindrical space 36 and the internal cylindrical space 35 .
  • the reverse osmosis cartridge also includes a reverse osmosis treatment membrane structure 54 between the cylindrical enclosure 52 and the central tube 53 .
  • the membrane structure 54 communicates with the central tube 53 for the latter to collect the flow of permeate and with the exterior of the cartridge via the annular faces 55 and 56 thereof extending between the cylindrical enclosure 52 and the central tube 53 , at each axial end of the cylindrical enclosure 52 , respectively to feed the cartridge 51 with water treated by the pretreatment means and for the outflow of retentate.
  • the reverse osmosis cartridge 51 further includes means 57 for providing a sealed connection between the cylindrical separator wall 38 and the cylindrical enclosure 52 of the cartridge 51 , which means are fastened to the cylindrical enclosure 52 and extend around it at the same end as the axial end of the container 30 closed by the bottom 23 .
  • these connecting means include a sleeve 58 in which the cylindrical enclosure 52 is engaged and which is extended by an annular seal 59 providing the connection to the cylindrical separator wall 38 .
  • the central tube 53 of the reverse osmosis cartridge 51 is closed at the same end as the annular face 55 of the cartridge 51 through which water to be purified enters the cartridge.
  • the head 20 and the bottom 23 of the container 30 each further include a central bush 60 , 61 in which is housed an axial end section of the central tube 53 .
  • An O-ring 62 housed in a groove 63 in the central tube 53 is furthermore disposed between the latter and the central bush 60 of the head 20 to seal this assembly.
  • the portion of the internal cylindrical space 35 extending between the annular face 56 of the reverse osmosis cartridge 51 and the internal face 64 of the head 20 is divided into two separate free sub-spaces that are concentric and communicate separately with a respective orifice of the head 20 .
  • the free sub-space 65 delimited by the bush 60 communicates with the orifice 33 2 of the connector 32 2 to evacuate from the module 14 the flow of permeate collected by the central tube 53 and consisting of water purified by the pretreatment means (activated charcoal grains 49 ) and the reverse osmosis cartridge 51
  • the annular free sub-space 66 extending around the bush 60 communicates with the orifice 33 3 of the connector 32 3 to evacuate from the module 14 the flow of retentate produced by the reverse osmosis cartridge 51 and consisting of waste water.
  • the external cylindrical space 36 communicates with the orifice 33 1 of the connector 32 1 to feed water to be purified to the pretreatment means consisting of the activated charcoal grains 49 .
  • water treated by the pretreatment means enters the portion of the free internal cylindrical space 45 extending between the annular face 55 of the reverse osmosis cartridge 51 and the internal face 67 of the bottom 23 to feed the reverse osmosis cartridge 51 with water to be purified through the annular face 55 thereof.
  • the modules 14 ′ and 15 ′ shown in FIG. 6 are coupled by a base 21 ′ with a figure-of-eight configuration which comprises two rings 22 ′ having an internal conformation enabling them to be removably clipped to one of the bottoms 23 ′ of the modules 14 ′ and 15 ′, each of which is provided with a flange 24 ′ for this purpose.
  • the two rings 22 ′ are connected by small bridges 25 ′ molded in one piece with the rings 22 ′ from a plastics material.
  • the modules 14 ′ and 15 ′ are coupled together at the same end as their head 20 ′ by two connecting strips 26 ′ and 27 ′.
  • the strip 26 ′ is provided with studs 28 ′ by means of which the modules 14 ′ and 15 ′ can be coupled together side by side thanks to holes 29 ′ through their lateral extensions 16 ′ adapted to receive the studs 28 ′.
  • the pin 71 can be replaced by a screw cooperating with a threaded boss.
  • each purified water production module 14 ′, 15 ′ includes a container 30 ′ having a cylindrical wall 31 ′ closed at a first axial end by the head 20 ′ for connecting the module 14 ′, 15 ′ to a water purification unit similar to the unit 10 and at its second axial end by the bottom 23 ′.
  • the head 20 ′ is permanently fixed to the cylindrical wall 31 ′ by a welding operation to fuse their annular edges and the bottom 23 ′ is molded in one piece with the cylindrical wall 31 ′ from a plastics material. This produces a monolithic container intended to form a disposable module 14 ′, 15 ′.
  • each head 20 ′ includes three parallel male connectors 32 ′ 1 - 32 ′ 3 , in each of which is formed a water inlet or outlet orifice 33 ′ 1 - 33 ′ 3 which communicates with the interior of the module 14 ′, 15 ′, and which extend globally perpendicularly to the axis 34 ′ of the cylindrical wall 31 ′ of the container 30 ′ (see FIGS. 6 and 7 ).
  • the male connectors are intended to be nested inside female connectors of the water purification unit, rubber seals (which cannot be seen in the figures) sealing the male and female connector assemblies.
  • the modules 14 ′ and 15 ′ also have recesses 17 ′ in their lateral extensions bordered by bevels 18 ′ and projections 19 ′ forming bearing surfaces for the user's thumbs.
  • the module 15 ′ is also filled with a conventional ion exchange resin and its connector 33 ′ 3 is therefore shut off by a plug 74 .
  • the connector 33 ′ 3 can be blocked off directly by the molding process.
  • the interior of the purified water production module 14 ′ is divided into an internal cylindrical space 35 ′ and an external cylindrical space 36 ′ which are concentric and communicate with each other via radial passages 37 ′ in the vicinity of the axial end of the container 30 ′ opposite that with the water inlet and outlet orifices 33 ′ 1 - 33 ′ 3 .
  • This division is intended to allow separate pretreatment and treatment of water entering the module 14 ′ in the external cylindrical space and the internal cylindrical space, respectively, and is provided by a concave plastics material internal cylindrical wall 38 ′, a cylindrical skirt 39 ′ projecting from the internal face of the head 20 ′, and a crenellated ring 40 ′ projecting from the internal face of the bottom 23 ′ and whose crenellations form the passages 37 ′.
  • the skirt 39 ′ and the ring 40 ′ provide continuity of separation from a corresponding longitudinal end of the cylindrical wall 38 ′ to the head 20 ′ and to the bottom 23 ′, respectively.
  • the internal cylindrical wall 38 ′ and the cylindrical skirt 39 ′ of the head 20 ′ are housed concentrically one inside the other with a seal 75 between them, whereas the head 20 ′ as such is fixed by fusion welding to the external cylindrical wall 31 ′, as mentioned hereinabove, except that only one ring 41 ′ is used for this.
  • the cylindrical skirt 39 ′ also has an annular recess 76 forming with a facing annular recess 77 of the cylindrical wall 38 ′ an annular housing for the seal 75 .
  • the perimeter of the internal cylindrical wall 38 ′ has in the vicinity of each of its axial ends six centering fingers 45 ′ which extend radially as far as the cylindrical wall 31 ′ of the container 30 ′ when the module 14 ′ is assembled.
  • crenellated ring 40 ′ and the axial end of the cylindrical wall 38 ′ at the same end as the second axial end of the container 30 ′ are housed concentrically one inside the other.
  • the cylindrical wall 38 ′ has an annular recess 78 by means of which the crenellated ring 40 ′ is nested inside the cylindrical wall 38 ′.
  • a plurality of locating patterns 79 project from the internal face 67 ′ of the bottom 23 ′ and extend radially away from the crenellated ring 40 ′.
  • the treatment means shown in FIG. 7 include a reverse osmosis cartridge 51 ′ known in the art and adapted to divide the flow of water treated by the pretreatment means into a flow of permeate consisting of water purified by the activated charcoal grains 49 ′ and the reverse osmosis cartridge 51 ′ and a flow of retentate consisting of waste water.
  • Reverse osmosis cartridges of the kind shown in FIGS. 3 and 7 are sold by the American companies Dow Chemical Corporation (FilmTec® models from the TW30 range) and Fluid Systems, for example.
  • the reverse osmosis cartridge 51 ′ includes a cylindrical enclosure 52 ′ and a hollow perforated central tube 53 ′ which are concentric with each other.
  • the tube is disposed so that it shares the axis 34 ′ of the cylindrical container 30 ′ with the external cylindrical space 36 ′ and the internal cylindrical space 35 ′.
  • the reverse osmosis cartridge includes a reverse osmosis treatment membrane structure 54 ′ between the cylindrical enclosure 52 ′ and the central tube 53 ′.
  • the membrane structure 54 ′ communicates with the central tube 53 ′, so that the latter can collect the flow of permeate, and with the exterior of the cartridge via the annular faces 55 ′ and 56 ′ thereof extending between the cylindrical enclosure 52 ′ and the central tube 53 ′, at each of the axial ends of the cylindrical enclosure 52 ′, respectively to feed the cartridge 51 ′ with water treated by the pretreatment means and for the outflow of retentate.
  • the reverse osmosis cartridge 51 ′ includes means 57 ′ for providing a sealed connection between the cylindrical separator wall 38 ′ and the cylindrical enclosure 52 ′ of the cartridge 51 ′, which means are fastened to the cylindrical enclosure 52 ′ and extend around the latter at the same end as the axial end of the container 30 ′ closed by the bottom 23 ′.
  • the connecting means include a sleeve 58 ′ in which the cylindrical enclosure 52 ′ is engaged and which has at its distal end (relative to the annular face 55 ′) an increased thickness forming an annular seal 59 ′ between the enclosure 52 ′ and the cylindrical wall 38 ′.
  • the central tube 53 ′ of the reverse osmosis cartridge 51 ′ is closed at the same end as the annular face 55 ′ of the cartridge 51 ′ through which water to be purified enters the cartridge.
  • the head 20 ′ and the bottom 23 ′ of the container 30 ′ each include a central bush 60 ′, 61 ′ housing an axial end section of the central tube 53 ′.
  • Two O-rings 62 ′ housed in respective grooves 63 ′ in the central tube 53 ′ are disposed between the latter and the central bush 60 ′ of the head 20 ′ to seal the assembly.
  • using only one O-ring can be envisaged.
  • the bush 61 ′ is formed of a plurality of circular arc-shaped segments 80 regularly spaced around the axis 34 ′ and concentrically surrounding a central truncated cone 81 for locating the cartridge 51 ′, which is operative inside the central tube 53 ′ of the latter.
  • the truncated cone 81 is formed of four columns 82 regularly spaced around the axis 34 ′ and slightly higher than the segments 80 .
  • the central tube 53 ′ When the module 14 ′ is assembled, the central tube 53 ′ is therefore gripped in the annular space between the central truncated cone 81 and the bush 61 ′ that surrounds it and the lower end of the enclosure 52 ′ surrounded by the sleeve 58 ′ is housed concentrically in the crenellated ring 40 ′, and the upper end of the latter abuts against the annular edge of the cylindrical skirt 39 ′ of the head 20 ′. Moreover, the lower annular edge of the central tube 53 ′ rests on radial ribs 83 projecting from the internal face 67 ′ of the bottom 23 ′ and connecting the columns 82 to respective radially adjacent segments 80 . Other radial ribs 84 that also project from the bottom 23 ′ further connect the external faces of the segments 80 facing toward the crenellated ring 40 ′ to the internal face 67 ′ of the bottom 23 ′.
  • radial ribs 85 also project from the internal face 64 ′ of the head 20 ′, some of them serving as radial abutments for the upper end of the cylindrical wall 38 ′.
  • the bushes 60 ′ and 61 ′ are beveled to facilitate fitting the central tube 53 ′.
  • the portion of the internal cylindrical space 35 ′ between the annular face 56 ′ of the reverse osmosis cartridge 51 ′ and the internal face 64 ′ of the head 20 ′ is divided into two separate free sub-spaces which are concentric and which communicate separately with a respective orifice of the head 20 ′.
  • the free sub-space 65 ′ delimited by the bush 60 ′ communicates with the orifice 33 ′ 2 of the connector 32 ′ 2 to evacuate from the module 14 ′ the flow of permeate collected by the central tube 53 ′ and consisting of water purified by the pretreatment means (activated charcoal grains 49 ′) and the reverse osmosis cartridge 51 ′, and the annular free sub-space 66 ′ around the bush 60 ′ communicates with the orifice 33 ′ 3 of the connector 32 ′ 3 to evacuate from the module 14 ′ the flow of retentate produced by the reverse osmosis cartridge 51 ′ and consisting of waste water.
  • the external cylindrical space 36 ′ communicates with the orifice 33 ′ 1 of the connector 32 ′ 1 to feed water to be purified to the pretreatment means consisting of the activated charcoal grains 49 ′.
  • water treated by the pretreatment means penetrates through the passages 37 ′ into the portion of the free internal cylindrical space 35 ′ between the annular face 55 ′ of the reverse osmosis cartridge 51 ′ and the internal face 67 ′ of the bottom 23 ′ to feed the reverse osmosis cartridge 51 ′ with water to be purified via its annular face 55 ′.
  • a different type of reverse osmosis cartridge can be used, in particular a membrane cartridge formed of hollow fibers.
  • the sealed connecting means of the cartridge can be either an integral part of the cartridge available off the shelf or fixed to an existing cartridge when the module is assembled.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nanotechnology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)
  • Filtering Materials (AREA)
US10/666,017 2002-09-26 2003-09-18 Module for purifying a fluid, in particular water Active 2026-11-09 US8414767B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0211913A FR2845082B1 (fr) 2002-09-26 2002-09-26 Module de purification d'un fluide, notamment d'eau
FR0211913 2002-09-26

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Publication Number Publication Date
US20040104161A1 US20040104161A1 (en) 2004-06-03
US8414767B2 true US8414767B2 (en) 2013-04-09

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015102011A1 (de) 2015-02-12 2016-08-18 Sartorius Lab Instruments Gmbh & Co. Kg Aufreinigungseinrichtung für Wasser
US10471391B2 (en) 2016-11-19 2019-11-12 Aqua Membranes, Inc. Flow directing devices for spiral-wound elements
US11083997B2 (en) 2017-04-20 2021-08-10 Aqua Membranes Inc. Non-nesting, non-deforming patterns for spiral-wound elements
US11090612B2 (en) 2017-04-12 2021-08-17 Aqua Membranes Inc. Graded spacers for filtration wound elements
US11376552B2 (en) 2016-09-20 2022-07-05 Aqua Membranes Inc. Permeate flow paterns
US11633700B2 (en) 2020-04-07 2023-04-25 Aqua Membranes Inc. Independent spacers and methods
US11745143B2 (en) 2017-04-20 2023-09-05 Aqua Membranes, Inc. Mixing-promoting spacer patterns for spiral-wound elements
US11745144B2 (en) 2017-10-13 2023-09-05 Aqua Membranes Inc. Bridge support and reduced feed spacers for spiral-wound elements

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008100123A (ja) * 2005-07-07 2008-05-01 Koichi Kawakami 水処理機器
CO5820225A1 (es) * 2007-05-04 2007-11-30 Orejuela Alvaro Sanjines Aparato y metodo parar tratar el agua, empleando filtros de medios filtrantes granulares
DE102007044922B4 (de) * 2007-09-20 2012-04-19 Manfred Völker Filtermodul und dessen Aneinanderreihung zu einem Filtersystem
US10040703B2 (en) * 2008-08-08 2018-08-07 Kx Technologies Llc Reverse osmosis push filter with floating key lock
US11426685B2 (en) 2008-08-08 2022-08-30 Kx Technologies Llc Push filter with floating key lock
US9233322B1 (en) 2008-08-08 2016-01-12 Kx Technologies Llc Push filter with floating key lock
KR102028628B1 (ko) 2008-09-02 2019-10-04 나트릭스 세퍼레이션즈, 인코포레이티드 크로마토그래피 막, 이를 포함하는 장치 및 이의 이용방법
WO2012158896A2 (en) 2011-05-17 2012-11-22 Natrix Separations Inc. Layered tubular membranes for chromatography, and methods of use thereof
CN104144885B (zh) * 2012-02-29 2016-11-16 三菱丽阳株式会社 内窥镜清洗装置用过滤装置
TW201440870A (zh) * 2013-02-01 2014-11-01 Toray Industries 淨水器用濾芯及淨水器
US9950286B2 (en) * 2013-10-22 2018-04-24 Sartorius Stedim Biotech Gmbh Capsule body attachment
WO2016095401A1 (zh) * 2014-12-19 2016-06-23 佛山市顺德区美的饮水机制造有限公司 一体复合滤芯和具有其的净水系统
CN104556449B (zh) * 2014-12-19 2017-05-10 佛山市顺德区美的饮水机制造有限公司 复合滤芯和具有它的净水系统
WO2016127505A1 (zh) * 2015-02-09 2016-08-18 佛山市顺德区美的饮水机制造有限公司 一体复合滤芯和具有其的净水系统
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CN104925976B (zh) * 2015-05-22 2018-04-03 佛山市顺德区美的饮水机制造有限公司 复合滤芯及其控制方法和净水机
CN105329973B (zh) * 2015-10-29 2018-07-17 佛山市顺德区美的饮水机制造有限公司 复合滤芯和具有其的净水系统
WO2018187305A1 (en) * 2017-04-03 2018-10-11 4th-Phase, Inc. Ez separation
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CN109912059B (zh) * 2017-12-13 2021-12-03 九阳股份有限公司 一种反渗透复合滤芯组件
US11273397B2 (en) 2018-09-13 2022-03-15 Electrolux Home Products, Inc. Filter base for electronic connection to mating filter housing assembly
CN111115883B (zh) * 2018-10-31 2024-07-30 佛山市顺德区美的饮水机制造有限公司 复合滤芯和具有其的水处理装置
US11851351B2 (en) 2018-10-31 2023-12-26 Foshan Shunde Midea Water Dispenser Manufacturing Co., Ltd. Combined filter unit and water treatment apparatus having same
WO2020107398A1 (zh) * 2018-11-30 2020-06-04 周耀周 液体处理装置
US11413560B2 (en) 2019-11-18 2022-08-16 Electrolux Home Products, Inc. Push filter with floating key lock
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DE102021107856A1 (de) 2021-03-29 2022-09-29 Aquis Wasser-Luft-Systeme Gmbh, Lindau, Zweigniederlassung Rebstein Wasserfilterpatrone mit zwei konzentrisch zueinander angeordneten Wasserfilterpatronenauslässen
DE102021107855A1 (de) 2021-03-29 2022-09-29 Aquis Wasser-Luft-Systeme Gmbh, Lindau, Zweigniederlassung Rebstein Wassertank mit Tankauslassventil und Wasserfilterpatrone mit zwei konzentrisch zueinander angeordneten Wasserfilterpatronenauslässen

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542199A (en) * 1969-07-24 1970-11-24 Donald T Bray Reverse osmosis water purification unit
US4645601A (en) * 1984-08-31 1987-02-24 Everpure, Inc. Quick change reverse osmosis assembly
US4877521A (en) 1987-04-30 1989-10-31 Cuno, Incorporated Quick-change filter cartridge and head therefor
US4948505A (en) * 1986-01-27 1990-08-14 Cuno, Inc. Quick-change filter cartridge and head therefor
US4990248A (en) * 1987-06-03 1991-02-05 Eastman Kodak Company Reverse osmosis apparatus
US4992170A (en) * 1990-04-03 1991-02-12 Eastman Kodak Company Reverse osmosis filter cartridge assembly
EP0422453A2 (de) 1989-10-06 1991-04-17 Millipore Corporation Verfahren zur Reinigung von Wasser
US5026465A (en) 1989-08-03 1991-06-25 Ionics, Incorporated Electrodeionization polarity reversal apparatus and process
US5078876A (en) * 1990-01-17 1992-01-07 Trysan Research, Inc. Apparatus for multistage purification of water
US5221473A (en) * 1989-10-13 1993-06-22 Burrows Bruce D Filter cartridge assembly for a reverse osmosis purification system
US5891334A (en) * 1997-06-19 1999-04-06 Plymouth Products, Inc. Filter cartridge retaining assembly
EP1069079A1 (de) 1998-03-24 2001-01-17 Ebara Corporation Elektrische entsalzungsvorrichtung
EP1233004A1 (de) 1997-11-12 2002-08-21 Archer-Daniels-Midland Company Entsalzung von wässrigen Strömen durch Elektrodialyse mit gepackten Zellen

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542199A (en) * 1969-07-24 1970-11-24 Donald T Bray Reverse osmosis water purification unit
US4645601A (en) * 1984-08-31 1987-02-24 Everpure, Inc. Quick change reverse osmosis assembly
US4948505A (en) * 1986-01-27 1990-08-14 Cuno, Inc. Quick-change filter cartridge and head therefor
US4877521A (en) 1987-04-30 1989-10-31 Cuno, Incorporated Quick-change filter cartridge and head therefor
US4990248A (en) * 1987-06-03 1991-02-05 Eastman Kodak Company Reverse osmosis apparatus
US5026465A (en) 1989-08-03 1991-06-25 Ionics, Incorporated Electrodeionization polarity reversal apparatus and process
EP0422453A2 (de) 1989-10-06 1991-04-17 Millipore Corporation Verfahren zur Reinigung von Wasser
US5221473A (en) * 1989-10-13 1993-06-22 Burrows Bruce D Filter cartridge assembly for a reverse osmosis purification system
US5078876A (en) * 1990-01-17 1992-01-07 Trysan Research, Inc. Apparatus for multistage purification of water
US4992170A (en) * 1990-04-03 1991-02-12 Eastman Kodak Company Reverse osmosis filter cartridge assembly
US5891334A (en) * 1997-06-19 1999-04-06 Plymouth Products, Inc. Filter cartridge retaining assembly
EP1233004A1 (de) 1997-11-12 2002-08-21 Archer-Daniels-Midland Company Entsalzung von wässrigen Strömen durch Elektrodialyse mit gepackten Zellen
EP1069079A1 (de) 1998-03-24 2001-01-17 Ebara Corporation Elektrische entsalzungsvorrichtung

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016128115A1 (de) * 2015-02-12 2016-08-18 Sartorius Lab Instruments Gmbh & Co. Kg Reinigungsvorrichtung und verwendung für wasser mit nutzung von filterkartuschen
US10723636B2 (en) 2015-02-12 2020-07-28 Sartorius Lab Instruments Gmbh & Co. Kg Purification device and purification method for water utilizing filter cartridges
DE102015102011B4 (de) 2015-02-12 2023-11-02 Sartorius Lab Instruments Gmbh & Co. Kg Reinigungsvorrichtung für Wasser und Wasserreinigungssystem sowie deren Verwendung
DE102015102011A1 (de) 2015-02-12 2016-08-18 Sartorius Lab Instruments Gmbh & Co. Kg Aufreinigungseinrichtung für Wasser
US11376552B2 (en) 2016-09-20 2022-07-05 Aqua Membranes Inc. Permeate flow paterns
US10471391B2 (en) 2016-11-19 2019-11-12 Aqua Membranes, Inc. Flow directing devices for spiral-wound elements
US11040311B2 (en) 2016-11-19 2021-06-22 Aqua Membranes Inc. Interference patterns for spiral wound elements
US11090612B2 (en) 2017-04-12 2021-08-17 Aqua Membranes Inc. Graded spacers for filtration wound elements
US11612862B2 (en) 2017-04-12 2023-03-28 Aqua Membranes Inc. Graded spacers in spiral wound elements
US11745143B2 (en) 2017-04-20 2023-09-05 Aqua Membranes, Inc. Mixing-promoting spacer patterns for spiral-wound elements
US11083997B2 (en) 2017-04-20 2021-08-10 Aqua Membranes Inc. Non-nesting, non-deforming patterns for spiral-wound elements
US11896933B2 (en) 2017-04-20 2024-02-13 Aqua Membranes Inc. Non-nesting, non-deforming patterns for spiral-wound elements
US11745144B2 (en) 2017-10-13 2023-09-05 Aqua Membranes Inc. Bridge support and reduced feed spacers for spiral-wound elements
US11633700B2 (en) 2020-04-07 2023-04-25 Aqua Membranes Inc. Independent spacers and methods

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US20040104161A1 (en) 2004-06-03
JP4219780B2 (ja) 2009-02-04
JP2004268016A (ja) 2004-09-30
EP1405828B1 (de) 2015-04-22
FR2845082B1 (fr) 2006-02-10
FR2845082A1 (fr) 2004-04-02
EP1405828A1 (de) 2004-04-07

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